FRP Pultruded Grating

FRP pultruded grating is another type of fiberglass-reinforced plastic grating with the following characteristics:

• Manufacturing Process - Uses a pultrusion process where fibers and resin are continuously pulled through a heated steel mold to form long solid profiles.
• Material - Typically uses a vinyl ester resin system with E-CR glass fibers. Provides corrosion resistance, impact resistance, and fire rating.
• Surfaces - Has a textured top with exposed fibers providing grip. The bottom is smooth.
• Strength - Strong longitudinal weight-bearing strength due to its continuous fiber nature.
• Applications - Used for flooring, stairs, and walkways where high strength and corrosion resistance are needed.
• Benefits - High strength-to-weight ratio, lightweight, low electrical conductivity, reduces noise, fast drainage.
• Limitations - Not recommended for concentrated loads. Maximum lengths around 40'.

Pultruded FRP grating delivers very high longitudinal strength thanks to the continuous fiber reinforcement from the pultrusion manufacturing process. It is an economical alternative to molded grating.

Key differences from molded FRP grating include the textured top, lower transverse strength, increased fiber exposure on top, and length constraints. But it shares the general corrosion resistance and low-weight benefits of FRP.